Chair



ct. 11, 1938., I W. M HANSON ZIZAQ? CHAIR Filed Dec. l0, 1937 2 Sheets-Sheet l l l I l I I l I I I I I l l I l I z5 I I s 4l o 54 17" 13 E Qv 44 53 Y I gru f5* l 6 .3l I l l I z5 i. Z5 .35 N w] A TTORNE YS.

OC. 11, 1938. W, M HANSON 2,132,467

CHAIR .Filed'Dec. lO, 1957 2 Sheets-Sheet 2 i BY//Q/g A TTORNEYS.

Patented Oct. 11, 1938 CHAIR I `Walter M. Hanson, Grand Rapids, Mich., assigner to American Seating Company, Grand Rapids, Mich., a corporation of New Jersey Application December 10, 1937, Serial No. 173,041

V9 Claims.

The present invention relates to chairsand more particularly to chairs of the revoluble type. The-primary objects of the instant invention are to provide a chairof the general character above indicated and which is particularly Iwell adapted for installation and use in airplanes although it is likewise adaptable for use in motor buses, railway coaches and the like; to provide such a chair which may be conveniently revolved and thereafter fixed in a predetermined rotated position; and, to provide such a chair which though light in weight, is rigid and sturdy in construction;utilitarianv in its intended use and reasonably economical'in manufacture and installar tion.

An illustrativeembodiment of the invention is shown in the accompanying drawings, wherein: Figure 1 is a` front elevational view of the chair;

" Figure 2 is'aside `elevational view thereof;

y Figure 3 is a sectional view online 3 3 of Figure 1; A

Figure 4 is an enlarged fragmentary view of one of the chair-legs elevated from vthe floor and in its normal and rotatable position as shown in full lines from its flxedly depressed position shown in dotted lines;`

Figure 5 is an enlarged fragmentary view of a portion of the undercarriage of the` chair, the central supportingY pedestal'and its rbase'being shown in central vertical section;

Figure 6 is a sectional view thereof on line 6-6 ofFigure 5;

Figure 7 is aV sectional' View on line of Figure 5; and

Figure `8 'is an enlarged sectional view on line 8-8 of Figure 5. l

Referring then "to, the drawings wherein like parts of the structure shown are designated by the same numerals in the several views, a tubular pedestal I is here shown as secured to abase |I in vertical disposition relative thereto as by a bolt I2 passed through the tubular pedestal and by its nut |3 in screw threaded engagement therewith which is in engagement with the-roof of the base within the well lll'th'erein. The upper end of the base is provided with a seat I upon which a coiled expansion spring I6 is supported and whicnspring encircles a tubular column slidably vand rotatably embracing the pedestal I0.

Th-e chair from whose arcuate under frame member I8 the tubularcolumn is rigidly secured and fromv which it centrally depends'generally comprises an upholstered back I9 secured' arms for the chair are secured adjacent opposite sides of the seat support 2| and provide-spaced depending front and rear legs 25, 26, 2l and 28 for the chair. Reinforcing tubular members 29, 30 connect each front leg 25, 2'| with its rear leg 26, 28 respectively and each reinforcing member 29, 33 is connected by a pair of spaced parallel and transverse tubular reinforcing members 3|, 32. The opposite ends of the arcuate frame memberl I3 are each secured toa tubular cross member 33, Xed between the pair of spaced parallel tubular -reinforcing 'members 3|, 32 and the medial or upper portion of this arcuate frame member is secured to a transverse tubular member 34 x'ed between oppositeV sides of the seat support 2|.

The centrally depending tubular column is provided with a rigidly fixed bell'portion 35 near its lower end which springably seats upon the upper end of the coiled expansion spring I6 for normally elevating the legs 25, 26,21 and 28 of the chair above the floor.

This bell portion 35 is provided with a pair of oppositely disposed and laterally projecting lugs 36 upon which thetransverse tubular members 3| 32 are each seated and to which each is secured. as by rivets 31 passing through plates 38 seated upon the upper lengths of each member 3|, 32, which rivets likewise pass through each of said members and through each lug 36, all as best shown in Figures 2, 3v and 6.

A double toggle having two of its pair of links 39 pivotally connected to the pedestal I0 by means of a pintle 40 passing through slots 4I in the tubular column and having two of its other pair of links 42 pivotally connected to upstanding ears 43 integrally formed with the bell portion 35 of the column I'|, is pivotally connected intermediate each of itspairs of links by a pair of spaced parallel double links 44 whose opposite ends are Veach pivotally connected to a pedal 45 which in turn is pivotally connected to the arcuate frame member I8, as best shown in Figures l and 5. I

Thus in operation, since'the legs of the chair are normally elevated above the floor as shown in full lines in-Figure 4 -because the bell portion 35 of the tubular column I1 is supported on the coiled expansion spring I6, movement of the pedal from its position shown in full lines in Figure 5 to its positionfshown in dotted lines in the same view breaks the toggle and compresses the spring to depress the legs of the chair into frictional engagement of their rubber capped feet 46 with the floor.

It will thus be seen that the chair herein shown and described may be conveniently revolved when unoccupied and thereafter Xed in a predetermined rotated position by pedally operated means.

While but one specific embodiment of the inthe same is dened by the following claims.

I claim:

1. In a structure of the class described, a chair f supporting pedestal adapted to be secured to the floor in vertical disposition relative thereto, a chair having a plurality of depending legs and provided with a depending tubular column slidably embracing and springably supported by the pedestal for normally elevating the legs above the floor, a toggle having one link pivotally connected to the pedestal and having its other link pivotally connectedk to the column, and mechanism operatively connected With the toggle for depressing the spring supported column to eiect frictional engagement of the legs With the floor.

2. In a structure of the class described, a chair supporting pedestal adapted to be secured to the floor in vertical disposition relative thereto, a chair having a plurality of depending legs and provided with a centrally depending tubular column slidably and rotatably embracing and springably supported by the pedestal for normally elevating the legs above the floor to permit rotation of the supported chair, a toggle having one link pivotally connected to the pedestal and having its other link pivotally connected to the column, and pedally controlled mechanism operatively connected with the toggle for depressing the spring supported colurnn'to effect frictional engagement of the legs with the floor to thereby prevent rotation of the chair.

3. In a structure of the class described, a chair supporting pedestal adapted to be secured to the floor in vertical disposition relative thereto, a chair having a plurality of depending legs and provided with a depending tubular column slidably embracing and springably supported by the pedestal for normally elevating the legs above the floor, and mechanism operatively connected intermediate the spring supported column and its supporting pedestal for depressing the column to eilect irictional engagement ofthe legs With the floor.

4. In a structure of the class described, a chair supporting pedestal adapted to be secured to the floor in vertical disposition relative thereto, a coiled expansion spring encircling the pedestal and supported upon the 'base thereof, a chair having a plurality of depending legs and provided with a depending tubular column slidably embracing the pedestal and having a portion supported upon said spring for normally elevating the legs above the floor, and mechanism operatively connected intermediate the spring supported column and its supporting pedestal for depressing the column to effect frictional engagement of the legs With the floor.

5. In a structure of the class described, a'chair supporting pedestal adapted to be secured to the floor in vertical disposition relative thereto, a coiled expansion spring encircling the pedestal and supported upon the base thereof, a chair having a plurality of depending legs andpro-v vided With a centrally depending tubular column slidably and rotatably embracing the pedestal and having a portion supported upon said spring for normally elevating the legs above the floor lfloor in vertical disposition relative thereto, a

coiled expansion spring encircling the pedestal Vand 'supported upon the base thereof, a chair having a plurality of depending legs and provided with a centrally depending tubular column slidably and rotatably embracing the pedestal and having a portion supported upon said spring for normally elevating the legs above the floor to permit rotation of the supported chair, a toggle having one link pivotally connected to the pedestal and having its other link pivotally connected to the column, and pedally controlled mechanism operatively connected with the toggle for depressing the spring supported column to effect frictional engagement of the legs with the oor to thereby prevent rotation of the chair.

'7. In a structure of the class described, a chair supporting pedestal adapted to be secured to the floor in Vertical disposition relative thereto, a chair having a plurality of depending legs and provided With a depending tubular column slidably embracing and springably supportedby the pedestal for normally elevating the legs above the floor, a toggle having one link pivotally connected to the pedestal and having its other link pivotally connected to the column, a single link pivotally connected at oneend intermediate the pivotally connected toggle links, and a pedal pivotally connected to the chair frame and to the other endv of the single link to break the togglefor depressing the spring supported co1- umn to effect irictional engagement of the legs with the oor.

8. In a structure of the class described, a chair supporting pedestal adapted to be secured to the floor in Vertical disposition relative thereto, a chair having a plurality of depending legs and provided with a centrally depending tubular column slidably and rotatably embracing and springably supported by the pedestal for normally elevating the legs above the oor to permit rotation ofthe supported chair, a toggle having one link pivotally connected to the pedestal and having its other link pivotally connected to the column, a single link pivotally connected at one end intermediate the pivotally connected toggle links, and a pedal pivotally connected to the chair frame Vand to the other end of the single link to break the toggle for depressing the spring supported column to effect frictional engagement of the legs with the floor.

9. In a structure of the class described, a chair supporting pedestal adapted to be secured to the oor, a chair rotatably supported upon the pedestal and having a plurality of depending legs, 

